A frequent utterance by me. This morning, watching the news (which I do at the gym, on torture devices powered by my movement) I thought “I need to but a buy on GM at $0.50”. Then I got home and was distracted by other obligations and didn’t get to my trading account until 11 AM. Had I followed my instinct, I would have got it at the price I wanted. It actuall dropped lower, then bounce back up to hover in the .80 range.
This would have been a long-term holding for me. My rule is, set a price and that’s it, unless different information comes in. Everytime I break that rule, I lose money. I lose it following the rule, too, but less than half the time vs everytime.